M0

M0 is modular stablecoin infrastructure that lets organizations launch and manage their own custom stablecoins instead of adopting a one-size-fits-all token. Its stack has three independent layers: an application layer for token behavior, rewards, and access controls; a distribution layer for cross-chain liquidity routing; and an issuance layer where teams pick an issuer or become their own. M0 is backed by U.S. Treasury Bill collateral held in special purpose vehicles, and exposes an Orchestration REST API (quotes, cross-chain orders, EIP-2612 permits) plus a Protocol GraphQL API for on-chain data, along with an MCP server and agent skills for AI builders. Used by MetaMask, PayPal, Anchorage, MoonPay, and others.

M0 publishes 5 API contracts indexed on the APIs.io network, including Order API, Permit API, Quote API, and 2 more. Tagged areas include Company, Cryptocurrency, Stablecoins, Payments, and Blockchain.

The M0 catalog on APIs.io includes 1 Spectral governance ruleset.

M0’s developer surface includes engineering blog, sandbox, documentation, API reference, getting-started guide, signup flow, support, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

42.9/100 developing ▬ flat Agent 32/100 agent ready Front door AI 1/6 silent Heartbeat 89/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Company Cryptocurrency Stablecoins Payments Blockchain DeFi Cross-Chain Infrastructure Stablecoin Issuance

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 42.9/100 · developing

Contract Quality 9.0 / 19

Developer Ergonomics 10.7 / 15

Access Clarity 3.2 / 15

Operational Transparency 2.6 / 10

Contract Governance 1.6 / 9

Discoverability 5.4 / 8

Regulatory Posture 3.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 47.8 — up to +13.1 composite points
Contract Governance scores 18.2 — up to +9.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/m0/apis.yml: open an issue on github.com/api-evangelist/m0 to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Stablecoins and Tokenization (stablecoin issuers, tokenized assets)	covered	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

M0 Protocol API

GraphQL API to query on-chain M0 protocol data — token supplies, holder balances, yields, and configuration.

M0 Order API

The Order API from M0 — 3 operation(s) for order.

M0 Permit API

The Permit API from M0 — 2 operation(s) for permit.

M0 Quote API

The Quote API from M0 — 2 operation(s) for quote.

M0 Topology API

The Topology API from M0 — 2 operation(s) for topology.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

liquidity-api Order API

OPEN COLLECTION

liquidity-api Order Permit API

OPEN COLLECTION

liquidity-api Order Quote API

OPEN COLLECTION

liquidity-api Order Topology API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

M0 MCP Server

M0's official hosted, remote MCP server. Exposes the M0 protocol and platform documentation, glossary, and deployed contract addresses to AI assistants over the Model Context Pr...

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

Quote and settle a cross-chain stablecoin swap on M0

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

M0 API Rules

52 rules · 50 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

M0 Orchestration Overlay

3 actions · documentation · m0-orchestration-openapi-original.json

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

M0 Authentication

apiKey · 1 scheme

SECURITY

M0 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

M0 Agentic Access

9 operations · 4 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Deprecation

Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Blog

Blog

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: m0
name: M0
description: 'M0 is modular stablecoin infrastructure that lets organizations launch and manage their own custom stablecoins
  instead of adopting a one-size-fits-all token. Its stack has three independent layers: an application layer for token behavior,
  rewards, and access controls; a distribution layer for cross-chain liquidity routing; and an issuance layer where teams
  pick an issuer or become their own. M0 is backed by U.S. Treasury Bill collateral held in special purpose vehicles, and
  exposes an Orchestration REST API (quotes, cross-chain orders, EIP-2612 permits) plus a Protocol GraphQL API for on-chain
  data, along with an MCP server and agent skills for AI builders. Used by MetaMask, PayPal, Anchorage, MoonPay, and others.'
url: https://raw.githubusercontent.com/api-evangelist/m0/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://cdn.prod.website-files.com/6762be5b6c55f4c330bf115d/6a16e8d2d0a0bd93c8c99688_OG-HP.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
- polychain
- ribbit-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Cryptocurrency
- Stablecoins
- Payments
- Blockchain
- DeFi
- Cross-Chain
- Infrastructure
- Stablecoin Issuance
tags_raw:
- Company
- Crypto
- Stablecoins
- Payments
- Blockchain
- DeFi
- Cross-Chain
- Infrastructure
- Stablecoin Issuance
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: M0 Protocol API
  description: GraphQL API to query on-chain M0 protocol data — token supplies, holder balances, yields, and configuration.
  humanURL: https://docs.m0.org/api-reference/protocol/overview
  baseURL: https://protocol-api.m0.org/graphql
  properties:
  - type: ChangeLog
    url: changelog/m0-changelog.yml
- aid: m0:m0-order-api
  name: M0 Order API
  description: The Order API from M0 — 3 operation(s) for order.
  humanURL: https://docs.m0.org/api-reference/introduction
  baseURL: https://gateway.m0.xyz/v1/orchestration
  tags:
  - Order
  properties:
  - type: OpenAPI
    url: openapi/m0-order-api-openapi.yml
- aid: m0:m0-permit-api
  name: M0 Permit API
  description: The Permit API from M0 — 2 operation(s) for permit.
  humanURL: https://docs.m0.org/api-reference/introduction
  baseURL: https://gateway.m0.xyz/v1/orchestration
  tags:
  - Permit
  properties:
  - type: OpenAPI
    url: openapi/m0-permit-api-openapi.yml
- aid: m0:m0-quote-api
  name: M0 Quote API
  description: The Quote API from M0 — 2 operation(s) for quote.
  humanURL: https://docs.m0.org/api-reference/introduction
  baseURL: https://gateway.m0.xyz/v1/orchestration
  tags:
  - Quotes
  tags_raw:
  - Quote
  properties:
  - type: OpenAPI
    url: openapi/m0-quote-api-openapi.yml
- aid: m0:m0-topology-api
  name: M0 Topology API
  description: The Topology API from M0 — 2 operation(s) for topology.
  humanURL: https://docs.m0.org/api-reference/introduction
  baseURL: https://gateway.m0.xyz/v1/orchestration
  tags:
  - Topology
  properties:
  - type: OpenAPI
    url: openapi/m0-topology-api-openapi.yml
common:
- url: https://www.m0.org/newsroom
  type: Blog
- type: Sandbox
  url: sandbox/m0-sandbox.yml
- type: DeveloperPortal
  url: https://docs.m0.org/
- type: Documentation
  url: https://docs.m0.org/
- type: APIReference
  url: https://docs.m0.org/api-reference/introduction
- type: GettingStarted
  url: https://docs.m0.org/get-started/how-it-works
- type: Blog
  url: https://research.m0.org
- type: GitHubOrganization
  url: https://github.com/m0-foundation
- type: SignUp
  url: https://dashboard.m0.org
- type: Support
  url: https://m0.org/contact-us
- type: TermsOfService
  url: https://m0.org/terms-conditions
- type: PrivacyPolicy
  url: https://m0.org/privacy-policy
- type: MCPServer
  url: mcp/m0-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/m0-llms.txt
- type: Authentication
  url: authentication/m0-authentication.yml
- type: AgenticAccess
  url: agentic-access/m0-agentic-access.yml
- type: ErrorCatalog
  url: errors/m0-error-codes.yml
- type: Conventions
  url: conventions/m0-conventions.yml
- type: DataModel
  url: data-model/m0-data-model.yml
- type: Conformance
  url: conformance/m0-conformance.yml
- type: Lifecycle
  url: lifecycle/m0-lifecycle.yml
- type: ChangeLog
  url: changelog/m0-changelog.yml
- type: Deprecation
  url: https://docs.m0.org/api-reference/protocol/changelog
- type: DomainSecurity
  url: security/m0-domain-security.yml
- type: Overlay
  url: overlays/m0-orchestration-overlay.yaml
- type: Website
  url: https://m0.org/
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 18
  pass: local-v1

M0 API — frequently asked questions

Does M0 have an API?

Yes. APIs.io lists 5 APIs from M0, including M0 Protocol API, M0 Order API and M0 Permit API, and 2 more.

Is there an OpenAPI specification for the M0 API?

Yes. APIs.io indexes 4 OpenAPI specifications for M0, each linked for download from this page.

How do I authenticate with the M0 API?

M0 uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as M0 Authentication.

Does M0 have an MCP server?

Yes. APIs.io lists 1 MCP server for M0: M0's official hosted, remote MCP server. Exposes the M0 protocol and platform documentation, glossary, and deployed contract addresses to AI assistants over the Model Context Protocol (streamable HTTP

Is the M0 API ready for AI agents?

M0 has a Kin Score of 42.9 out of 100 (developing) and an Agent Readiness score of 32.1 (agent-ready), scored by API Evangelist on 2026-11-06.

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